Polarization control ofGaN-based micro-caivty lasers with top high-contrast grating reflectors

Tsu Chi Chang, Kuo Bin Hong, Shiou Yi Kuo, Tien Chang Lu

研究成果: Conference contribution同行評審

摘要

We reported on GaN micro-cavity (MC) lasers combining one rigid TiO2 high-contrast grating (HCG) structure as the output mirror. HCG structure was made directly on the GaN without an airgap, designed to yield high reflectance for transverse magnetic (TM) or transverse electric (TE) polarized light. The laser emission was TM polarized with a degree of polarization of 99.2% and had a small divergence angle of 14 degrees (full width at half maximum), under pulsed optical pumping at room temperature. This demonstration of laser operation for the GaN-based MC with an HCG fully exhibited advantages of HCGs for applications in semiconductor lasers at the wavelength from green to ultraviolet regimes.

原文English
主出版物標題MOC 2019 - 24th Microoptics Conference
發行者Institute of Electrical and Electronics Engineers Inc.
頁面284-285
頁數2
ISBN(電子)9784863487123
DOIs
出版狀態Published - 11月 2019
事件24th Microoptics Conference, MOC 2019 - Toyama, Japan
持續時間: 17 11月 201920 11月 2019

出版系列

名字MOC 2019 - 24th Microoptics Conference

Conference

Conference24th Microoptics Conference, MOC 2019
國家/地區Japan
城市Toyama
期間17/11/1920/11/19

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